When it comes to pedals, I have a sickness, and the only cure is more knobs. That’s why I found the 4ms Tremulus Lune to be one of the best tremolo circuits out there. One schematic and you can build a pedal with up to 6 knobs, and there are times when I do prefer having more features to fewer. So for this build, I elected to include the diodes for the symmetry mod, as well as 5 other knobs (Spacing, Smoothness, Gain, Depth, and Speed) which allow for so much control and shaping options over the amplitude envelope.
As a beginner, the Tremulus Lune was one of the first circuits I built, and I was really happy with the results once I got it to work properly. It was a relatively simple circuit to build with a parts count that isn’t particularly outrageous. I had initially built it on vero board with Harold Sabro’s layout. Then when I got the hang of building on perf board, I took some time to study the schematic, and came up with a layout that matched my vision for the pedal itself. Here is that layout (updated 2/6/2019):
And here is the end result:
I elected to drill the knobs on the side, but I think given the layout it would be fairly easy to build this on a more classically aligned pedal design (knobs on the front face, jacks on the sides). My wife also made a 3D design for a mini knob that covers the small gain trimpot, which I’ve placed at the front side of the pedal. The whole thing fits very nicely into a 1590B.
* The layout has been updated (thanks to user @lesgoob!)
* For anyone interested in a ready-made PCB for this DIY project, check out the webstore.